Imagine you are trying to measure the width of a single strand of spider web. You have fastened the web to the slide, only rather than mounting the strand vertically as you did with the hair, you have mounted it horizontally. You illuminate the strand with a 650nm laser and project the resulting...
Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. Her bungee cord has an unstretched length of 50 m and a spring constant k=700N/m. lola has a mass of 45 kg. How fast is she falling when she just starts to stretch the cord? How long does it take for Lola to reach...